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Chevrolet finally discovers battery defects

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General Motors is conducting a survey of Chevy Bolts sold in the year 2017-2019, due to the risk of fire due to the batteries. The new poll came after two Bolts had recently caught fire despite receiving the supposed software fix.

The GM company finally clarified the source of the problem. The automaker says that, working with battery supplier LG Chem, it discovered that some of the cells that make up the Bolt’s packaging may have two simultaneous manufacturing defects. The company did not specifically say what these defects were, but when they are present they can cause a fire.

GM is telling owners to take some precautions until they can check and try to fix every vehicle. The company says owners should not charge more than 90% of the vehicle or drop it below 70 miles (which is about 27%). This means owners will only be able to use about 60 percent of their vehicle’s capacity until GM is able to complete the new fix.

Chevrolet finally discovers battery defects

Owners also charge their vehicle after each use, according to GM. One of the warnings given to owners was that they should not park their vehicles in or near their homes, and that they should also not leave Bolts charging overnight.

Once GM is ready to carry out the repair, technicians will inspect the batteries and replace any modules that contain problem cells. The repair should already be underway, but GM says the new defects were only recently discovered.

A dozen fires will have occurred in these Bolts. The previous fix, which was shared in May, involved installing software on the affected screws that detected potential issues related to the change in battery module performance.

The battery supplier faced all kinds of problems with other types of products. Some home battery systems also caught fire, as Electrek points out.

Although special care and instructions are needed to know how to put out a fire in an electric vehicle, there is no data to show that fires occurred at a higher rate than fires in cars with an internal combustion engine.

Source: Chevrolet

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